Well it works now.
What a difference! It turns about 2100 rmp at 60 mph. It was a bad relay. I'm looking for a "period" replacement now. I haven't been able to find one yet.
For now I hooked up a generic relay (from Radio Shack). It's one of those small black plastic cubes. It looks terrible.
Thanks to everyone for the input. I feel I understand the overdrive system now.
